Question
Asked Oct 23, 2019
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In humans, the allele for short fingers is dominant over that for long fingers.  If a person with short fingers had one parent with long fingers and marries a person with long fingers, what are the chances for each biological child to have short fingers?. Show a punnet square. 

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Expert Answer

Step 1

Given: The allele for short fingers is dominant over that for long fingers. Let us represent short fingers by F and long fingers by f.  Now, a person with short fingers had one parent with long fingers. So, the person with short finger should have Ff as its genotype since long fingers are homozygous recessive in nature and the person should contain one of its alleles from the mentioned parent.

Step 2

Next, the person with short finger marries a person for long fin...

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Person with short finger -Ff Person with long finger- ff f F ff (long finger) f Ff (short finger) Ff (long finger) Ff (long finger) f

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